Stone turning and cutting machine.



No. 855,234. PATENT-ED MAY 28, 19.07- J. S. DETRIGK & J. W. NEIDHARDT.STONE TURNING AND CUTTING MACHINE.

- APPLICATION FILED \TAN.30, 1906.

BSHEETS-SHEBT 1v fizz/enters No. 855,234; PATENTED MAY 2a, 1907. J. s.DETRIGK & J. w. NEIDHARDT. STONE TURNING'AND CUTTING MACHINE.

APPLICATION FILED .numo, 190s.

No. 855,284. PATENTED MAY 28, 1907.

V J. S. DETRIOK & J. W. NEIDHARDT.

STONE TURNING AND CUTTING MACHINE. APPLICATION FILED JAN.30, 1906.

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No. 855,234. PATENTED MAY-28, 1907.

J. S. DETRIGK & J. W. NEIDHARDT. STONE TURNING AND CUTTING MACHINE;

APPLIOATION FILED JAN.30, 1906.

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No. 855,234. PATENTED MAY 28, 1907.

J. s. DETRIOK & J. w. NBIDHARDT. I 'STONE TURNING AND CUTTING MACHINE.

'APPLIUATION FILED JAN BO, 1906.

n4: uonms PETERS can, wnsumcron'. o. c.

UNITED STATES PATENT OFFICE. JACOB s. DETRIOK AND JOSEPH w. NEIDHARDT,or BALTIMORE, MARYLAND.

STONE TURNING AND CUTTING MIA CHINE.

To all whom it may concern.-

Be it known that we, J ACOB S. DETRIOK, a citizen of the United States,residing at Baltimore, in the State of Maryland, and JOSEPH TV.NEIDHAR-DT, a citizen of the United States, residing at Baltimore, inthe State of Maryland, have invented certain new and useful Improvementsin Stone Turning and Cutting Machines, of which the following is aspecification.

This invention relates to machines for working stone, especially fordressing stone columns.

The object of the invention is to provide a machine or apparatus thatcan turn up a stone column or cylinder from the rough, and thereupon,without removing the stone from the centers, can produce fluting orlongitudinal planing of the turned column.

The primary object of this invention is the provision of an improvedopen-top stone col umn dressing machine, that is, a machine in which thediameter of the stone to be dressed is not limited by a cross-beam orother member extending crosswise of and above the stone for carrying acutting or dressing tool; and. in which a massive stone once it isplaced in position on its supporting means can be completely finishedwithout the rehandling thereof and without the necessity ofreciprocating the stone back and forth under a cutting tool, or ofadjusting it to the tool; and in which the cutting or dressing tools,one at each side of the stone column, are reciprocated back and forthboth together while the stone is stationary, and also either or bothwhile the stone is being rotated, such tool having a fixed relativespeed lengthwise of and during the rotary movement of the stone. Byrotating the stone and simultaneously reciprocating the tool lengthwisethereof during such rotation a stone column can be turned up from therough in a much quicker and better manner than is the case where thestone is reciprocated back and forth under a fixed cutting tool as inthe ordinary stone planer, and by so constructing the machine that adifferent kind of work may be done on the stone when the latter is heldagainst rotation, by tools carried by the same traveling carriagelocated one at each side of the stone and operative together orindependently of each other as occasion may require, a machine isprovided which. actual practice has Specification of Letters Patent.Application filed January 30,1906. Serial No. 298,6()5.

Patented May 28, 1907.

demonstrated is superior to anything known in the stone working art.

In the drawings representing an embodiment of our invention, Figure 1 isa perspective view of the machine in the operation of turning a column,but showing the upright 82 removed from the carriage'14l on the righthand runway 41 and the tool holder 76 mounted directly on said carriage;Fig. 2 is a similar view, but showing the operation of fiuting with bothuprights 82 on the carriages 14, Fig. 3 is a plan view of the machine asshown in Fig. 1; Fig. 4 shows the machine in side elevation, Fig. 5shows in perspective the pawl mechanism for locking the face plate insuccessive positions or fluting the column, Fig. 6 is an end elevationfrom front end of the machine as assembled in Figs. 1 and 3, Fig. 7 is afragmentary horizontal section through the rotatable nut for the feed.screw of the carriage, Fig. 8 is a sec tional view on the line 88 ofFig. 7 with the nut removed, Fig. 9 shows the ring clamp supporting theworm shaft for operating the feed nut, Fig. 10 shows in side elevationthe driving mechanism for the face plate, Fig. 11 shows in sideelevation the traveling carriage of the tool holder, Fig. 12 shows thesame parts in end elevation; and Fig. 13 is a view somewhat similar toFig. 11, with the stock B; and two tool carriage mechanisms 'C, C thatare arranged on opposite sides of the head and tail stocks. These latterare practically duplicates, and a description of one will answer forboth, the same reference letters being applied to the correspondingparts of each.

The head stock A consists of a frame work 15 arranged to support insuitable bearings a main driving spindle 16, which may be provided witha suitable form of thrust bearing, denoted generally by 17. The spindle16 has on one end a face-plate 18, whose periphery is provided with gearteeth 19. The face-plate has a center 20, which is the live center ofthe machine.

When the machine is used for the turning operation, it is driven from ashaft 21 that is operated by a pulley 22, preferably from an overheadcounter. shaft or other suitable means. Two sets of gear connections areshown for driving the face-plate 18 from the shaft 21, which are bestshown in Figs. 3 and 10. A pinion 23, fast on the shaft 21, meshes witha gear 24 loose on a shaft 25 that is rotatably supported immediatelybelow the shaft 21. On this shaft 25 is secured a pin ion 26 thatengages a gear 27, fast on a stub shaft 28. And the shaft 28 carries apinion 29, meshing with the gear 19 of the face-plate, whereby thelatter is driven. The shaft 21 also carries a pinion 3O meshing with agear 31, loose on the shaft 25; but the pinion 30 'is smaller than thepinion 23, While the gear 31 is larger than the gear 24. j The gear 31carries a clutch portion 32, and the gear 24 has a clutch portion 33 onone face, as shown. On the shaft 25 is clutch member 34 that has clutchportions on its ends arranged to en gage respectively with the clutchportions 32 and 33, alternately, as the clutch member is shifted towardeither of such clutch portions of the gears, by means of a lever 35,suitably pivoted to the face of the machine, by which means the gear 31,or else the gear 24, with which the clutch member engages becomes and tobe clamped by suitable bolts 37.

locked to the shaft 25 and will rotate therewith. The other of these twogears will obviously be loose on the shaft and can rotate thereonfreely. Either of these clutch gears being locked to the shaft 25, willrotate the pinion 26, and through the gear members 27 and 28, willoperate the head stock and live spindle.

The tail stock B comprises a runway 351 on which is adjustably securedthe tail stock slide 36, to move to and from the head stock, The tailstock spindle is adjustable by means of .the end hand wheel 38 to movethe dead center 39 toward and from the live center 20; and which may beclamped in adjusted positions by a clamping bolt 40.

Each too-l carriage mechanism comprises a runway 41 that may beadjustably mounted on supports 42 to be shifted toward and from the lineof centers; and which serves to support and guide a tool carriage 14.The

/ runway carries bearings 43 in which is mounted a feed screw 44, butwhich is prevented from endwise movement. The feed screw 44 carries agear 45 on one end that meshes with a pinon 46 fast on a shaft 47; whichshaft is driven by means of a pulley 48, by belt from any suitablesource of power, such as an overhead pulley as shown in Fig. 1. On theshaft 47 are loose pulleys 49 and 50 on opposite sides of thedrivepulley 48, for the use of forward and reversing belts, such as 51and 52. When one of the belts is driving the pulley 48, the other beltis rotating one of the idler pulleys. Automatic means are provided forshifting the belts 51 and 52 to reverse the rotation of the feed screw44. A bar 53 is slidable in guidesupporting member ways 54 along therunway and carries tappets 99 engaged by a detent 98 on the toolcarriage at certain periods in the travel of the latter to be therebyshifted endwise at the limits of travel of the carriage. A rock shaft 55is vertically supported in bearings 56 on an upright 57, and carries atits lower end an arm 58 that is pivotally connected. with the bar 53,whereby the shaft 55 is rocked by the reciprocation of the bar. At itsupper end the rock shaft carries an arm 59 pivotally connected with abar 60, movable in bearings 61. The bar 60 carries an apertured arm 62engaging the belt 52; and also carries an apertured arm 63 engaging thebelt 51. By this means it will be seen. that the shifting of the bar 53will shift one of the belts 51 or 52 onto the live pulley 48, wherebythe feed screw 44 will. be rotated in either direction as required, toadvance the tool carriage 14. A suitable hand lever 400 is providedpivoted adjacent to its lower end and in position to operate the beltshifting mechanism with which it is connected through the medium of thebar 53.

Each tool carriage 14 is provided with a nut member for; engaging thescrew shaft 44. On one side of the machine the tool carriage is shown asprovided with a nut member 113 rotatably mounted in 'a bearing portion64 of the carriage.

therewith, and which engages a worm 66 secured on an upright shaft 67.This shaft is provided with a hand wheel 68 at its upper end forrotation by the operator. The worm shaft is carried in bearings 69, 69,forming part of a split ring 70, that is clamped by a screw 72 on a neck71, extending from the bearing portion 64 of the carriage. The worm 66will prevent the rotation of the worm wheel on the nut, and hence willnormally hold the nut stationary; whereby the rotation of the feed screw44 will advance the carriage in the usual manner. But when-the feedscrew is stationary, the carriage can be advanced by turning the wormshaft, which will rotate the nut through the worm wheel, and by theengagement of the latter with the screw, will move the carriage eitherway as desired. On the, right The nut carries a worm wheel 65 at oneend, that may be integral I hand side of the machine, Fig. 1, the worm'wheel adjustment ofthe carriage is shown 'as located at the forward endof the carriage, and operated by a similar hand wheel 68, whichmechanism being identical with that'just described, need not be furtherset forth.

Each tool carriage 14 is provided with a tool holder, that can beremovably and adjustably mounted on top of the tool carriage; and thereis further provided an upright or constructed to be mounted on the toolcarriage in place of the tool holder by removal of the latter, whichupright is provided with means for adjustment of the same tool holderthereon whereby the latter can be adjusted both vertically andhorizontally. I

On the top of the tool carriage 14 is provided a dove-tail guide 74having at the intermediate portion a slot 75,- (see Figs. 11 and 13). Atool holder. 76 is provided with a dove-tail slot 77 shaped to permitthe tool holder to engage the said guide 75, whereby the tool holder canbe moved to and from the line of centers.

At the front of the tool carriage 14 is arranged a lug 78 whose boreengages an adjusting screw 79 provided with a hand wheel 80, the screw79 being rotatable in the lug, but prevented from endwise movement. Thetool holder 76 has a lug S1 projecting into the slot 7 5, which has athreaded bore that can be engaged by the screw 79 whereby the rotationof the screw will serve to reciprocate the. tool holder. The upright orsupporting member 82 contains a dove-tail slot 83 in its base,corresponding to the slot in the tool holder, whereby upon removal ofthe tool holder, the upright can be mounted on the tool carriage toengage the dovetail guide 74, as shown in Fig. 11. The upright isclamped in such position by any suitable means such as bolts 85. Asaddle S6has a dove-tail slot 87, (see Fig. 3), and is verticallymovable on one side face of the upright 82 by engagement with adove-tail guide 88 on the side face of the upright. The latter side faceof the upright has an open portion 89 into which projects a piece 90from the saddle, that hasa threaded bore 91 engaged by the screw 92rotatably mounted on the upright, and controlled by a hand wheel 93;whereby the saddle is vertically adjustable. The side face of-the saddleis provided with a dove-tail guide 94 (see Fig. 11), that is constructedto be engaged in the dove-tail slot '75 of the tool holder 76. The guide94 is slotted at its middle portion. The saddle 86 has a screw 95mounted in a bearing 96 to rotate therein but prevent it from advancing,the screw being operated by a hand wheel 97. The screw 95 is arranged toengage the nut portion 81 of the tool holder 76, whereby the latter isadjusted thereon for the cross feed. By this mechanism the tool can beadjusted ver tically relative to the work, and can be given a cross feedin such adjusted positions. In such position the tool holder is bestadapted for the fluting operation or for longitudinally cutting of thestone mounted between the centers; the carriage being operated forlongitudinal feed by the screw 44. The stone to be operated upon ismounted between the centers, and secured to the face plate in anysuitable manner, such as by bolts passing into apertures in leadedsockets in the stone.

For the turning operation, which would precede the fluting operation,the upright 82 is removed from the carriage and the tool holder 76 ismounted directly upon the carriage, as shown at the right side in Fig.1, and also shown in Figs. 3, .5 and 13. The stone would preferably beturned from one side only; although if desired an inverted cutting toolcould be mounted on the opposite side for simultaneously acting uponthestone. During the turning operation the face plate and the stone arerotated from the drive pulley 22, which may be by a belt 109 engaging apulley 110 on a suitable overhead shaft, not shown. The tool carriagecarrying the cutting tool during this operation is not advanced by meansof the belts 51 and 52. These two belts are arranged to be free from thedrive pulley 48, anda belt 111 is ar.- ranged between the pulley 48 anda pulley .112 fast on the live spindle 16 of the head stock. By thisarrangement the tool care riage will have a fixed relative speed to thatof the live spindle rotating the stone, and

.therefore a proper cutting speed can be given to the tool in itslongitudinal feed.

When the turning operation is completed, the belt 109 is removed, orelse the countershaft is stopped so that the live spindle will notrotate; and the belt 111 is removed from the pulleys48 and 112. And thetool carriageon each side is reciprocated by the belts 51 and 52 in themanner hereinbefore set forth.

When it is desired to flute or longitudinally cut the stone that hasbeen turned as just described, the live spindle and head stock areclamped in the desired successive positions of the revolution of thestone by suitable means. In Fig. 5 is shown a detent member 100 that isadjustable on the machine to engage between the teeth of the gear 19 ofthe face plate. On a portion 101 of the frame is mounted ablock 102having two slotted portions 103, through which project clamping bolts104 fast in the plate 101. The block 102 has a slotted portion 105 inwhich slides the detent 100, and the latter is provided with a slot 106through which projects a clamping bolt 1.07 to secure the detent inadjusted position. The detent can be moved up to engage with the gear bymeans of a bolt 108 that screws in the member 102. For the fluting orlengthwise cutting of the stone, the tool holder is mounted on thesaddle of the upright, in each carriage member as shown in Fig. 2. Andthe tool carriage on each side is reciprocated by the belts 51 and 52 inthe manner hereinbefore set forth. After a cut has been taken, thedetent 100, is released and retracted, and the face plate is swung thegear 19. If at this position it does not register properly with a gearspace, the block 102 is shifted by releasing the bolts 104.

Having thus described our invention, we claim:

1. A stone dressing machine constructed and organized forperformingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising in combination means for supporting thecolumn at each end thereof, means for holding said column in a fixedposition and adjustable to permit intermittent or continuous rotation ofsaid column, means for rotating said column, a tool carriage at eachside of said column, and means for moving each of said carriageslongitudinally of the column during the rotation of the latter to permitthe turning of the column and also intermediate its intermittentrotations and when the column is fixed against movement to permit thegrooving or fluting thereof.

2. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising in combination means for supporting thecolumn at each end thereof, means for holding said column in a fixedposition and adjustable to permit intermittent or continuous rotation ofsaid column, means for rotating said column, a runway at each side ofsaid columnsup porting means and adjustable to the same extentthroughout toward and from said column-supporting means, a tool carriageon each of said runways, and means for moving each of said carriageslengthwise of the column during the rotation of the latter to permit theturning of the column and also intermediate its intermittent rotationsand when the column is fixed against movement to permit the grooving orfiuting thereof.

3. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising in combination means for supporting thecolumn at each end thereof, means for holding said column in a fixedposition and adjustable to permit rotation thereof, means for rotatingsaid column, a tool carriage located at each side of said column, meansoperative through the medium of the columnrotating means for moving oneor both of said carriages longitudinally of the column during therotation thereof and whereby the carriage will have a fixed relativespeed to that of the column,'and means for moving both of said carriageslongitudinally of said column when the latter is fixed against movementto permit the grooving or fiuting of the same.

4. A stone dressing machine constructed and organized for performmgdlfferent kinds .of, means for rotating said column and comprisinggearing one member of which is in mesh with said face plate gear, a toolcarrlage located at each slde of said column, one

or both movable longitudinally of the column during the rotation of thelatter to permit the turning of the column, and both movablelongitudinally thereof when the column is fixed against movement topermit the grooving or fiuting thereof, and means for moving saidcarriages.

5. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlmgof said columns, comprlslng in combination means for supporting thecolumn at each end thereof, means for holding the column in a fixedposition and operative to permit the rotation thereof, means forrotating said column at different speeds and comprising two sets ofgears, clutch mechanism between a pair of loosely mounted gears, one ofeach set, a tool carriage movable longitudinally of the column duringthe rotation of the latter to permit the turning of the column and alsowhen the column is fixed againstmoveinent to permit the grooving orfluting of the column, and means for moving said carriage.

6. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising in combination means for supporting thecolumn at each end thereof, means for holding the column in a fixedposition and operative to permit the rotation thereof, means forrotating said column at different speeds and comprising two sets ofgears, clutch mechanism between a pair of loosely mounted gears, one ofeach set, a pair of tool carriages located one at each side of saidcolumn and movable longitudinally of the column during the rotation ofthe latter to permit the turning of the column and also when the columnis fixed against movement to permit the grooving or fiuting of thecolumn, and means for moving said carriages.

7. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, means for supporting thecolumn at each end thereof, means for holding said column in a fixedposition and operative to permit the rotation thereof, means forrotating said column, a tool carriage, means for movingsaid carriagelongitudinally of the column during the rotation of the latter, meanscarried by said carriage for turning the column, means for adjustingsaid means toward and from the column, means for also moving saidcarriage longitudinally of the column when the latter is fixed againstmovement, means adapted to be mounted on said carriage on the removal ofthe turning tool for grooving or fluting the column, and means foradjusting said means in the plane of the column and also toward and fromsaid column.

8. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, means for supporting thecolumn at each end thereof, means for holding said column in a fixedposition and opera tive to permit the rotation thereof, means forrotating said column, a tool carriage movable longitudinally of thecolumn during the rotation thereof and also when fixed against rotation,means for moving said carriage, a removable upright mounted on saidcarriage, a tool holder carried thereby and adjustable in the plane ofthe column and toward and from the same to permit grooving or fluting ofthe column and adapted to be mounted on said carriage on the removal ofsaid upright and adjustable toward and from the column.

9. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, means for supporting thecolumn, means for holding said column in a fixed position and operativeto permit the rotation thereof, means for rotating said column, a toolcarriage located at each side of the column for movement longitudinallyof the column during the rotation of the lat ter and also when thecolumn is fixed against movement, means for moving one or both of saidcarriages, tools carried by said carriages for turning the column andadjustable toward and from the column, means adapted to be mounted onsaid carriages on the removal of the turning tool for carrying groovingor fluting tools, and means for adjusting said tools-in the plane of thecolumn and also toward and from said column.

10. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, means for supporting thecolumn at each end thereof and including a geared face plate, means forholding the column in a fixed position and operative to permit therotation thereof, means for rotating said column at different speeds andcomprising two sets of gears one in mesh with said face plate gear,clutch mechanism between apair'of loosely mounted gears one of each set,a tool carriage movable longitudinally of work on massive stone columnswithout v the rehandlmg of said columns, comprislng,

in combination, means for supporting the column at each end thereof andincluding a geared face plate, means cooperating with said face plategear for holding said column in a fixed position and operative to permitthe rotation thereof, means for rotating said column at differentspeeds, and comprising two sets of gears, one set having a gear in meshwith said face plate gear, clutch mechanism between a pair of looselymounted gears one of each set, a tool carriage located at each side ofsaid column and one or both movable longitudinally of the column duringthe rotation of the latter to permit the turning of thecolumn, means formoving either or both of said carriages and operative through the mediumof the columnrotating means whereby each carriage will have a fixedrelative speed to that of the column, means for moving both of thecarriages on occasion longitudinally of the column when thesame is fixedagainst movement for grooving or fiuting the same, and means forautomatically reversing said carriages.

12. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, means for supporting thecolumn at each end thereof and including a geared face plate, meanscooperating with said face plate gear for holding said column in'a fixedposition and operative to permit the rotation thereof, means forrotating said. column at different speeds and comprising two sets ofgears, one set having a gear in mesh with said face plate gear, clutchmechanism between a pair of loosely mounted gears one of each set, atool carriage located at each side of said column and one or bothmovable longitudinally of the column during the rotation of the latterto permit the turning of the column, means for adjusting said carriageslongitudinally of the column, means for moving either or both of saidcarriages and operative through the medium of the column-rotating meanswhereby each car riage will have a fixed relative speed to that of thecolumn, means for moving both of the carriages on occasionlongitudinally of the column when the same is fixed against movement forgrooving or fluting the same, and means for automatically reversing saidcarriages.

13. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, means for supporting thecolumn at each end thereof and including a geared face plate, means forrotating said face plate, means for holding said face plate againstrotation and comprising a detent in position to engage the teeth of saidgeared face plate to lock the same and thereby. the column againstrotation, said detent having an adjustment in the plane of movement ofsaid face plate, and means for dressing said column.

14. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, means for supporting thecolumn at each end thereof, means for holding said column in a fixedposition and operative to permit the rotation thereof, means forrotating said column, a runway located at each side of said column, atraveling tool carriage mounted on each of said runways, means formoving said carriages on said runways, means for automatically reversingeach of said carriages, and means carried by each of said carriages forpermitting the man-' ual adjustment of the carriage on said runway.

15. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, means for supporting thecolumn at each end thereof, means for holding said column in a fixedposition and operative to permit the rotation thereof, means forrotating said column, a runway located at each side of said column, atraveling tool carriage mounted on each of said runways, means formoving said carriages on said runways and including a rotatable screw,means for automatically reversing each of said carriages, and meanscarried by each of said carriages for permitting the manual adjustmentof the carriage on said runway and including worm gearing for lockingthe carriage to the screw when the screw is rotated and for adjustmentof the carriage on the screw whenthe same is stationary.

16. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said colunms, comprising, in combination, means for supporting thecolumn. at each end thereof, means for holding said column in a fixedposition and operative to permit the rotation thereof, means forrotating said column, a runway located at each side of said column, atraveling tool carriage mounted on each of said runways and movablelongitudinally of the column during the rotation thereof to permit theturning of the column and also when the column is fixed against movementto permit the grooving or fluting thereof, means for moving each of saidcarriages, a removable tool holder carried by each of said carriages andadjustable toward and from the column, an upright adapted to be mountedon each of said carriages on the removal of said tool holder, a saddlemounted on said upright means for holding said column in a fixedposition and operative. to permitthe rotation thereof, means forrotating sa1d column, a

runway located at each side of said column and adjustable toward andfrom the column,

' a'traveling tool carriage mounted on each of said runways and movablelongitudinally of the column during the rotation thereof to permit theturning of the column and also when the column is fixed against movementto permit the grooving or fluting. thereof, means for moving each ofsaid carriages, a removable tool holder carried by each of saidcarriages and adjustable toward. and from the column, an upright adaptedto be mounted on each of said carriages on the rc moval of said toolholder, a saddle mounted on said upright and adjustable in the plane ofthe column for supporting said tool holder on its removal from saidcarriage, and means for adjusting said tool holder on said up righttoward and from the column.

18. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising in combination, means for supporting thecolumn at eachend thereof, means for holding said column in a fixedposition and operative to permit the rotation thereof, means forrotating said column at different speeds, a runway located at each sideof said column, a traveling carriage mounted on each of said runways andmovable longitudinally of the column during the dressing thereof, meansfor adjusting each of said carriages on said runway, and means forautomatically reversing said carriages at predetermined periods duringthe work on said column. I

19. A stone dressing machine constructed and organized for performingdifferent kinds of work on massive stone columns without the rehandlingof said columns, comprising, in combination, a column supporting runway,adjustable means thereon for supporting a stone column for dressing, arunway located at the side thereof and adjustable toward and from saidcolumn supporting runway, one runway being higher than the other, atraveling tool carriage mounted on said last runway and movable thereonboth when the column is fixed against movement and when rotating, meansfor rotating said column, and means for holding said column finedagainst movement.

20. In a stone column turning and cutting machine, the combination of ahead stock member provided with a live spindle, a faceplate on one endof the spindle, a live center on the face plate, means for rotating theface plate, a tail stock member provided with a dead center alining withthe live center, a runway on each side of the line of centers, eachrunway being provided with a traveling carriage, means for reciprocatingeach carriage, means for driving said latter means at a predeterminedspeed relative to the rotation of the face plate, a tool holder mountedon each carriage and adjustable relative to the line of centers, a meansfor locking the face plate in successive positions of its revolution.

21. In a stone column turning and cutting machine, the combination of ahead stock member provided with a live spindle, a face plate on saidspindle, a live center on the face plate, a driving pulley carried bythe head stock, means for operating the live spindle from said pulley, atail stock member provided with a dead center in alinement with the livecenter, a runway on each side of the line of centers, a carriage movableon each runway, a screw shaft carried by each runway, a nut member oneach carriage in engagement with the screw shaft to advance the carriageupon rotation of the shaft, pulleys connected with each screw shaftcomprising a drive pulley and two idlers, and a pulley 011 the headstock operatively connected with the live spindle, the latter pulleybeing in alinement with the drive pulleys of.

the screw rods wherebyeither tool carriage may be driven by belt fromthe live spindle.

22. In a stone turning and cutting machine, the combination with arunway and toolcarriage, of an upright removably mounted on the toolcarriage, a saddle member carried by the upright and verticallyadjustable thereon, and a tool holder removably secured to the saddle,said tool holder and tool carriage being organized whereby upon removalof the tool holder from the saddle, the tool holder can be mounted onthe tool carriage in place of the upright.

23. In a stone turning and cutting machine, the combination of arunway,a carriage movable on the runway, an upright removably secured onthe tool carriage, a saddle carried by the upright and verticallyadjustable thereon, and a tool holder organized to be removably mountedon the saddle, and also to be removably mounted on the tool carriageupon removal of the upright therefrom.

24. In a stone turning and cutting machine, the combination of a runway,a carriage movable on the runway and provided with a dovetail guideextending transversely along its upper face, an upright having adove-tail slot on its lower face arranged to engage said guide toremovably secure the upright on the tool carriage, a saddle carried bythe upright and vertically adjustable thereon, the saddle being providedwith a dove-tail guide on its outer face corresponding in section to thedove-tail guide on the tool carriage, and a tool holder provided with adove-tail slot on one face whereby the holder can be removably mountedon the dove-tail guide on the saddle, and also can be removably mountedon the dove-tail guide on the tool carriage upon removal of the uprighttherefrom.

JACOB s. DETRIGK. JOSEPH W. NEIDHARDT.

IVitnesses:

JOHN L. WEBB, HARRY OADES.

